Det Norske Veritas - Germanischer Lloyd

I-Rules for Classification and Construction Ship Technology Part 1-Seagoing Ships Chapter 16-Harmony Class – Rules on Rating Noise and Vibration for Comfort, Cruise Ships (v ? 25 kn) - Edition 2003
 N SHIP TECHNOLOGY I-1-16

Annotation

1. In general, these Rules are based on national and international standards listed in Annex A. They will be adapted to the latest editions of these standards when deemed necessary or will be modified to account for the progress of knowledge. The Rules reflect the state of the art in vibration and acoustic technology.

2. Some important definitions for expressions used in these Rules are given in Annex B.

3. Among various comfort-promoting factors (e.g. decor and furniture of cabins and public spaces, indoor climate, board service, ship motions etc.), two main parameters determining the comfort on board a passenger ship are dealt with in these Rules: noise and vibration.

4. In this context, noise and vibration are defined as follows: – Noise: Audible air pressure variations, generated for instance by main engines, propellers, auxiliary machinery, systems and persons within the frequency range of 16 to 16 000 Hz. – Vibration: Structural oscillations in the frequency range of 1 to 80 Hz

5. The influence of ship motions (seasickness) on human wellbeing is not considered in these Rules.

6. These Rules are intended to support owners and shipyards to specify requirements regarding comfort for passengers and crew on board seagoing passenger ships.

7. Requirements according to current regulations of the responsible flag state regarding maximum noise and vibration levels in crew spaces have to be fulfilled independently of these Rules.